DescriptionThis video provides step-by-step instructions for replacing the exhaust manifold gasket on Craftsman riding lawn mowers. The most common reason for replacing the gasket is if it’s torn while replacing the muffler or during another repair.
All of the information in this manifold gasket replacement video is applicable to the following brands: Craftsman, Ariens, Poulan, Husqvarna, Murray
Tools used: 1/4” socket or nut driver, 3/8” socket or nut driver, 1/4” hex bit
Step-By-Step Instructions1
Before you replace the exhaust manifold gasket in your riding mower make sure the engine has cooled the ignition switch is in the “off” position and the key has been removed.
2
Disconnect the headlight wire harness then lift up the hood and detach it.
3
Now rotate the air filter cover retaining knobs counter-clockwise and pull off the cover.
4
Lift out the air filter.
5
Use a quarter-inch socket or nut driver to unthread the screw inside the filter housing.
6
Now use a 3/8th inch socket or wrench to unthread the four blower housing mounting bolts.
7
Detach the oil drain tube and lift off the blower housing.
8
Now use a quarter-inch hex bit to unthread the exhaust manifold bolts.
9
Release the exhaust manifold from the cylinder head and remove the old gasket if still intact.
10
Clean off any residue from the head and the manifold.
11
Install the new exhaust manifold gasket by aligning it on the manifold.
12
Insert a mounting bolt to hold the gasket in place then reposition the manifold and thread and tighten the bolts to secure.
13
Reposition the blower housing.
14
Make sure the housing is properly seated on the air diverter.
15
Rethread and tighten the mounting bolts to secure the housing – the longer bolts go in the back.
16
Replace the screw in the filter housing.
17
Reattach the oil drain tube to the blower housing.
18
Reposition the air filter.
19
Realign the cover and rotate the retaining knobs clockwise to secure.
20
Replace the hood by inserting the hinges into the slots in the frame.
21
Lower the hood and reconnect the headlight wire harness.